help with gun optimization

[A-98]

hey, i dont have acess to GGDT and even when i do, im no master with it.

i wanted any input on optimizations for my gun, such as slight increade in lenght of chamber, barrel length, and other such modifications. remember i dont want to dramatically change the look of my gun.

the specs right now are:
chamber lenght:24"
chamber width:2"
valve:two 1" porting chamber-sealers (no info on specs yet,srry)
barrel length:36"
barrel width:.7 (3/4 sch80)
mass of projectile:3.5 g
diameter of projectile:.68

if any additional info is needed, feel free to ask.
oh, and if its not too much to ask, could you ggdt it up as it is? last i did it i got 500 fps with a 5 gram projectile, but i think i plugged in the chamber info wrong :mumum:

[A-98]

in case your wondering this is related to the mini-mega-launcher topic